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| Content Provider | IET Digital Library |
|---|---|
| Author | Oguejiofor, Obinna S. Zhang, Li X. Nawaz, Naveed |
| Abstract | The heterogeneous cellular network (HetNet) has emerged as a promising technology for the fifth generation mobile networks that can be used to meet high demand of data rate and better quality of service (QoS) performance. However, the performance of HetNet will depend on how scarce resources such as frequency, time, power and spatial resource are shared among user equipments (UEs) in the system and also how interference is controlled. In this work, we utilise UE-Centric clustering as a tool to effectively determine the interfering base stations (BSs) that cause significant interference to each UE in the network. These interfering BSs together with the serving BSs of these interfered UEs will coordinate and make resource allocation (RA) decisions together to allocate spatial directions to each UE in the network in order to manage interference in the network. We formulate the RA problem as maximizing the weighted sum-rate of the HetNet while fulfilling power, QoS and interference constraints. This optimization problem is non-convex. We readily split the RA problem into two sub-problems: the spatial direction allocation problem and the power allocation problem, respectively. We are able to solve these problems efficiently using SeDumi. Simulation results of our proposed method, show significant improvement. |
| Starting Page | 2384 |
| Ending Page | 2392 |
| Page Count | 9 |
| ISSN | 17518628 |
| Volume Number | 12 |
| e-ISSN | 17518636 |
| Issue Number | Issue 18, Nov (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/12/18 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.5422 |
| Journal | IET Communications |
| Publisher Date | 2018-08-16 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | 5G Mobile Communication Cellular Radio Concave Programming Data Rate Electromagnetic Compatibility Fifth Generation Mobile Network HetNet Interfered UE Interference Interference Constraint Interference Management Interfering Base Stations Interfering BSs Interior Point Method Mobile Radio System Nonconvex Optimisation Problem Optimisation Technique Pattern Clustering Power Allocation Problem QoS Quality of Service Quality of Service Performance RA Problem Radio Frequency Interference Resource Allocation Resource Allocation Decision Scarce ReSource SeDumi Serving BSs Spatial Direction Allocation Problem Spatial Resource Two-tier Heterogeneous Cellular Network UE-centric Clustering Weighted Sum-rate Maximization |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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